App Store Connect is Apple's web-based portal for managing iOS, iPadOS, macOS, tvOS, watchOS, and visionOS applications throughout their entire lifecycle—from initial app creation and build uploads through TestFlight beta testing, App Review submission, and post-launch analytics. It serves as the central hub where developers configure metadata, manage pricing and availability across 175+ territories, track sales and financial reports, respond to user reviews, and monitor app performance metrics. Understanding App Store Connect's workflows, submission requirements, and optimization tools is essential for successful app deployment—knowing how to navigate roles and permissions, leverage TestFlight for beta testing, optimize product pages through A/B testing, and interpret crash reports and analytics separates developers who ship efficiently from those who struggle with rejections, delayed releases, and missed optimization opportunities.